The low- and equatorial-latitude ionosphere at a height of 500 km in the course of magnetospheric-ionospheric disturbances during September-December 1977 /according to data from the Cosmos-900 satellite/

Details The low- and equatorial-latitude ionosphere at a height of 500 km in the course of magnetospheric-ionospheric disturbances during September-December 1977 /according to data from the Cosmos-900 satellite/ The low- and equatorial-latitude ionosphere at a height of 500 km in the course of magnetospheric-ionospheric disturbances during September-December 1977 /according to data from the Cosmos-900 satellite/

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982kosis..20..872g&link_type=abstract

Kosmicheskie Issledovaniia, vol. 20, Nov.-Dec. 1982, p. 872-880. In Russian.

Physics

Equatorial Atmosphere, Ionospheric Disturbances, Magnetic Storms, Magnetospheric Instability, Satellite Observation, Cosmos Satellites, Daytime, Inhomogeneity, Night Sky, Particle Density (Concentration), Power Spectra

Scientific paper

Cosmos-900 data on variations of charged-particles concentration, acquired at various magnetic-storm phases during September-December 1977, were used to analyze the effect of magnetospheric-ionospheric disturbances on the ionosphere at low and equatorial latitudes. It is shown that the equatorial anomaly in the latitudinal distribution of charged particles often disappears during the daytime, and that this anomaly during the nighttime cannot be explained by generally accepted ideas concerning plasma convection at low latitudes. The appearance of concentration irregularities is found to depend on the rate of change of Dst variations, especially at the magnetic-storm recovery phase. The appearance of irregularities in the region of the largest charged-particle concentration gradients lends support to the gradient-drift mechanism for the formation of these irregularities.

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